Malicious PDF — malware analysis report

Static analysis result for SHA-256 359fb5d6a0be945c…

MALICIOUS

PDF

73.7 KB Created: 2020-11-26 08:32:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eb491f16e61df50a995bdda6cbaf8c9e SHA-1: 04ef9de53ddbbff13a774ff43dda82f7038dbd63 SHA-256: 359fb5d6a0be945c573245b6172aa475be4424bb3bc49a80f7a4a6f78cccb5b6
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/strik?utm_term=hal+lindsey+report+5+3+19 PDF link annotation
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/dubolumutefofig_jisorokirodub_rujiz.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/zinoxovij.pdfIn PDF document text
    • https://bonesinidojesu.weebly.com/uploads/1/3/4/5/134591006/dce550c5861ebf3.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/5b8bf3948c1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424011/normal_5f97d11c9a5c4.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/2785495.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/4094859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453740/normal_5fb55ab648e17.pdfIn PDF document text
    • https://juziwujaxizeze.weebly.com/uploads/1/3/4/6/134685910/8920836.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/simujix/graphic_organizer_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/baby_photos_hd_1080p.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47B 2932 bytes
SHA-256: 64168f1af5b75c2ca40975fba23c85e18bc0818e5ad9f71e5fa3f498e7955b60
font_01_sfnt_off0000deef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEF 5512 bytes
SHA-256: 77bcc64180d307785f7fe597ae37a376c74755e2a50936a6864d60e06e9e1b02
font_02_sfnt_off0000f1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C0 12396 bytes
SHA-256: c648ed323154f4eebbd0acd49906f72104098f0aadb061bd50d63c908b005fe5

Open this report in the interactive analyzer, or submit your own file for analysis.